This guide will instruct you on how to downgrade any A7 or A8-based iOS device to any version of iOS that it supports. This is a tethered downgrade, meaning that the device will have to be plugged into a computer each time it is restarted. In addition, Semaphorin bypasses the SEP, meaning that functions such as setting a passcode, using Touch ID, or even connecting to secure WiFi networks does not work. As such, using a device downgraded in this way isn't very practical.
Guide coming soon.